Optical lenses; optical lenses and photographic objectives for industrial purposes; optical lenses for detectors, optical lenses for cameras, optical lenses for industrial cameras, optical lenses for microscopes, optical lenses for lasers, optical lenses for telecameras, optical lenses for spectroscopes; photographic objective camera lenses; photographic objective camera lenses for industrial use; photographic objective camera lenses for telecameras, cameras, lasers not for medical use; optic...